/*
 *  Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
 * 
 *  Redistribution and use in source and binary forms, with or without modification, are
 *  permitted provided that the following conditions are met:
 * 
 *     1. Redistributions of source code must retain the above copyright notice, this list of
 *        conditions and the following disclaimer.
 * 
 *     2. Redistributions in binary form must reproduce the above copyright notice, this list
 *        of conditions and the following disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 * 
 *  THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 *  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
 *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 *  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *  The views and conclusions contained in the software and documentation are those of the
 *  authors and should not be interpreted as representing official policies, either expressed
 *  or implied, of BetaSteward_at_googlemail.com.
 */

package mage.abilities.effects;

import java.util.UUID;
import mage.Constants.Duration;
import mage.Constants.Outcome;
import mage.abilities.Ability;
import mage.filter.common.FilterPlaneswalkerPermanent;
import mage.game.Game;
import mage.game.events.DamageEvent;
import mage.game.events.GameEvent;
import mage.game.events.GameEvent.EventType;
import mage.game.permanent.Permanent;
import mage.game.stack.StackObject;
import mage.players.Player;
import mage.target.TargetPermanent;

/**
 *
 * @author BetaSteward_at_googlemail.com
 */
public class PlaneswalkerRedirectionEffect extends RedirectionEffect<PlaneswalkerRedirectionEffect> {

	private static FilterPlaneswalkerPermanent filter = new FilterPlaneswalkerPermanent();

	public PlaneswalkerRedirectionEffect() {
		super(Duration.EndOfGame);
	}

	public PlaneswalkerRedirectionEffect(final PlaneswalkerRedirectionEffect effect) {
		super(effect);
	}

	@Override
	public PlaneswalkerRedirectionEffect copy() {
		return new PlaneswalkerRedirectionEffect(this);
	}

	@Override
	public boolean applies(GameEvent event, Ability source, Game game) {
		if (event.getType() == EventType.DAMAGE_PLAYER) {
			DamageEvent damageEvent = (DamageEvent)event;
			UUID playerId = getSourceControllerId(event.getSourceId(), game);
			if (!damageEvent.isCombatDamage() && game.getOpponents(event.getTargetId()).contains(playerId)) {
				Player target = game.getPlayer(event.getTargetId());
				Player player = game.getPlayer(playerId);
				if (target != null) {
					int numPlaneswalkers = game.getBattlefield().countAll(filter, target.getId());
					if (numPlaneswalkers > 0 && player.chooseUse(outcome, "Redirect damage to planeswalker?", game)) {
						redirectTarget = new TargetPermanent(filter);
						if (numPlaneswalkers == 1) {
							redirectTarget.add(game.getBattlefield().getAllActivePermanents(filter, target.getId()).get(0).getId(), game);
						}
						else {
							player.choose(Outcome.Damage, redirectTarget, game);
						}
						return true;
					}
				}
			}
		}
		return false;
	}

	private UUID getSourceControllerId(UUID sourceId, Game game) {
		StackObject source = game.getStack().getStackObject(sourceId);
		if (source != null)
			return source.getControllerId();
		Permanent permanent = game.getBattlefield().getPermanent(sourceId);
		if (permanent != null)
			return permanent.getControllerId();
		return null;
	}
}
